But If you keep Selenium in the background or you run out of memory, it will crash, mine crashes If, for example I have a user with 2000 followers, everything works fine (except if you spam and then they send 429 too many requests error), if I let it run on the background, it will crash due to no elements has been loaded.
Also you can actually intercept the request and change it using selenium-wire, max number of user the can be sent from the server is 100. but sometimes, instagram thinks your account has been compromised and you need to change the password.
Instagram shows 12 followers per request in the popup. max 100 if you intercept and change the request.
I know, but I'm not worried about that as much as I'm worried about it crashes. I can send you the code if you want to.